arXiv:quant-ph/9605038AbstractReferencesReviewsResources
Separability of Mixed States: Necessary and Sufficient Conditions
Michal Horodecki, Pawel Horodecki, Ryszard Horodecki
Published 1996-05-28, updated 1996-06-26Version 2
We provide necessary and sufficient conditions for separability of mixed states. As a result we obtain a simple criterion of separability for $2\times2$ and $2\times3$ systems. Here, the positivity of the partial transposition of a state is necessary and sufficient for its separability. However, it is not the case in general. Some examples of mixtures which demonstrate the utility of the criterion are considered.
Comments: Revtex, 13 pages, replaced with minor typos corrected and some examples added
Categories: quant-ph
Keywords: sufficient conditions, mixed states, separability, simple criterion, partial transposition
Tags: journal article
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